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公开(公告)号：US20130017613A1
公开(公告)日：2013-01-17
申请号：US13182873
申请日：2011-07-14
CPC分类号： B01D15/1871 , B01D15/363 , B01D15/3847 , C01F11/005 , C01F11/36 , G01N33/493 , G01N33/84
摘要： The present invention provides an apparatus and rapid methods for extracting strontium ions from urine to provide a concentrated and purified strontium-90 extract suitable for scintillation measurements. The methods remove organic compounds, pigments, and alkali metal ions that can interfere with quantitative determination of strontium-90 in urine. A method of the invention comprises acidifying urine and removing organic pigments therefrom, loading a known quantity of so-treated urine onto a diphosphonic acid-based ion-exchange resin; flowing aqueous methanesulfonic acid through the diphosphonic acid-based ion-exchange resin to elute alkali metal ions therefrom; eluting strontium ions off of the diphosphonic acid-based resin and on to a strontium extraction chromatographic resin with a concentrated aqueous nitric acid solution; subsequently flowing water or a dilute acid stripping solution through the strontium extraction resin to strip the strontium from the strontium extraction resin; and collecting the strontium-containing stripping solution eluting from the strontium extraction resin.
摘要翻译： 本发明提供了一种用于从尿提取锶离子以提供适用于闪烁测量的浓缩和纯化的锶-90提取物的装置和快速方法。 这些方法可以去除可能干扰尿液中锶-90的定量测定的有机化合物，颜料和碱金属离子。 本发明的方法包括酸化尿液并从其中除去有机颜料，将已知量的如此处理的尿液加载到基于二膦酸的离子交换树脂上; 通过二膦酸离子交换树脂将甲磺酸水溶液从其中洗脱出碱金属离子; 从二膦酸类树脂中洗脱锶离子，并用浓硝酸水溶液萃取锶萃取色谱树脂; 随后将水或稀酸剥离溶液通过锶萃取树脂从锶萃取树脂中剥离锶; 并收集从锶萃取树脂洗脱的含锶剥离液。
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公开(公告)号：US08507284B2
公开(公告)日：2013-08-13
申请号：US13182873
申请日：2011-07-14
CPC分类号： B01D15/1871 , B01D15/363 , B01D15/3847 , C01F11/005 , C01F11/36 , G01N33/493 , G01N33/84
摘要： The present invention provides an apparatus and rapid methods for extracting strontium ions from urine to provide a concentrated and purified strontium-90 extract suitable for scintillation measurements. The methods remove organic compounds, pigments, and alkali metal ions that can interfere with quantitative determination of strontium-90 in urine. A method of the invention comprises acidifying urine and removing organic pigments therefrom, loading a known quantity of so-treated urine onto a diphosphonic acid-based ion-exchange resin; flowing aqueous methanesulfonic acid through the diphosphonic acid-based ion-exchange resin to elute alkali metal ions therefrom; eluting strontium ions off of the diphosphonic acid-based resin and on to a strontium extraction chromatographic resin with a concentrated aqueous nitric acid solution; subsequently flowing water or a dilute acid stripping solution through the strontium extraction resin to strip the strontium from the strontium extraction resin; and collecting the strontium-containing stripping solution eluting from the strontium extraction resin.
摘要翻译： 本发明提供了一种用于从尿提取锶离子以提供适用于闪烁测量的浓缩和纯化的锶-90提取物的装置和快速方法。 这些方法可以去除可能干扰尿液中锶-90的定量测定的有机化合物，颜料和碱金属离子。 本发明的方法包括酸化尿液并从其中除去有机颜料，将已知量的如此处理的尿液加载到基于二膦酸的离子交换树脂上; 通过二膦酸离子交换树脂将甲磺酸水溶液从其中洗脱出碱金属离子; 从二膦酸类树脂中洗脱锶离子，并用浓硝酸水溶液萃取锶萃取色谱树脂; 随后将水或稀酸剥离溶液通过锶萃取树脂从锶萃取树脂中剥离锶; 并收集从锶萃取树脂洗脱的含锶剥离液。
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